The tag has no wiki summary.

learn more… | top users | synonyms

4
votes
2answers
340 views

Are the default objects of VB a type of singleton?

Are the default objects supported by My keyword in VB.net is a kind of singleton? If not, what is the difference? Again is this "default object" feature is something useful? If yes, then why it is ...
11
votes
4answers
788 views

Does “notification center” pattern encourage good or bad program design?

Sometimes I come across these message-hub-style APIs, for example the Cocoa NSNotificationCenter: ...
38
votes
5answers
2k views

When is Singleton appropriate?

Some hold that the Singleton Pattern is always an anti-pattern. What do you think?